Speaking of God draws on a lifetime of reading and teaching to articulate in generally accessible language essential themes in a Christian understanding of God. Sponheim argues that Christians sense their faith calling them to "become vocal" and that in their God-talk they can speak reliably of God without arrogance and diffidence. Dividing his discussion into two parts, Sponheim introduces the reader to the "What" of God- what Christians have to say of God-and then to the "So What" or what follows from such believing for Christians living the faith. He draws distinctively on four sources seldom seen together: the christologically centered work of Soren Kierkegaard, the process-relational legacy of Alfred North Whitehead, contemporary Christian feminism, and the conversation between science and religion.
